⇒ se le ha citado como testigo a fin de que explique sus relaciones con el acusadohe has been called as a witness in order to explain o in order that he explain (form) o so that he can explain his relationship with the defendant

con el fin de hacer algoin order to do sth

a tal finwith this aim in mind, to this end

el fin justifica los mediosthe end justifies the means

(= propósito) purpose

⇒ un millón de dólares será destinado a fines benéficosa million dollars is to go to charity